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        <Identifier>Supplemental Information</Identifier>
        <Explanation>PART I, LINE 5 NUMBER OF EMPLOYEES MOUNT SINAI HOSPITAL OPERATES ALL PAYROLLS FOR RELATED ENTITIES AND ALL SALARIES ARE ALLOCATED BACK TO THE SEPARATE ENTITIES AND REPORTED AS IF PAID DIRECTLY BY THEM. THE HOSPITAL, MOUNT SINAI SCHOOL OF MEDICINE, ELMHURST HOSPITAL CENTER AND QUEENS HOSPITAL CENTER UTILIZE A COMMON PAYMASTER UNDER THE HOSPITAL'S TAX IDENTIFICATION NUMBER, WHICH ON A COMBINED BASIS COVERS 20,541 INDIVIDUALS. THE CHILDREN'S CENTER FOUNDATION DOES NOT HAVE ANY EMPLOYEES AND RECEIVES SERVICES FROM EMPLOYEES OF MOUNT SINAI SCHOOL of MEDICINE AND the MOUNT SINAI HOSPITAL. PART VI, SECTION A, QUESTION 2 FAMILY/BUSINESS RELATIONSHIPS *TRUSTEES DANIEL AND ELLEN CROWN ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES RONALD AND STEPHANIE KRAMER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES ROBERT LINDHART AND LEORA MOGILNER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION. *TRUSTEES MARK ROWAN AND LEON BLACK ARE MANAGING PARTNERS OF THE SAME FIRM. MARC BECKER IS A PARTNER AND BARRY COHEN SENIOR MANAGING DIRECTOR AT THIS FIRM AS WELL. *EX-OFFICIO TRUSTEES MICHAEL AND VICKI GROSS ARE HUSBAND AND WIFE. THEY CO-CHAIR THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES SALVATORE AND ALISON MASS BOMMARITO ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES GLEN AND DEBBIE AUGUST ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES BARRY AND JOYCE COHEN ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES MARC AND CARYN SEIDMAN BECKER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES ISRAEL AND CARYL ENGLANDER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES RICHARD A. AND SUSAN FRIEDMAN ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JOHN AND JUDITH HANNAN ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JOHN AND SUSAN HESS ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES STAFFORD AND LAURA TISCH BROUMAND ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JEFFREY AND SUSAN GOLDENBERG ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JOHN AND NANCY LEVENE ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES MARK AND JILL RACHESKY ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES STUART AND PAMELA ROTHENBERG ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES MARC AND CAROLYN ROWAN ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JACK AND ALISON SCHNEIDER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES JAMES AND MERRYL TISCH ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES STEWART AND LOIS PERELSON GROSS ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES HAROLD AND BETH RAUCHER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES GREGG AND LISA RECHLER ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES LIZZY AND NEIL COLE ARE HUSBAND AND WIFE. TOGETHER,THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *TRUSTEES LEON AND DEBRA BLACK ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. *RAMON AND LILA MURPHY ARE HUSBAND AND WIFE. TOGETHER, THEY HOLD ONE VOTE ON THE CHILDREN'S CENTER FOUNDATION BOARD. PART VI, SECTION A, QUESTION 6 AS DESCRIBED IN THE BY-LAWS, MOUNT SINAI SCHOOL OF MEDICINE IS THE SOLE MEMBER OF THE MOUNT SINAI CHILDREN'S CENTER FOUNDATION, INC. PART VI, SECTION A, QUESTION 7A &amp; 7B AS DESCRIBED IN THE BY-LAWS, MOUNT SINAI SCHOOL OF MEDICINE ELECTS THE BOARD OF DIRECTORS, THUS, CONTROLLING THE CHILDREN'S CENTER FOUNDATION AND PASSING INDIRECT CONTROL OVER THE CHILDREN'S CENTER FOUNDATION TO THE SCHOOL'S RELATED ORGANIZATIONS IN ACCORDANCE WITH SECTION 318 OF THE INTERNAL REVENUE CODE. PART VI, SECTION B, LINE 11B FORM 990 PROVIDED TO GOVERNING BODY THE FINANCE DEPARTMENT GATHERED THE RELEVANT INFORMATION AND PREPARED THE TAX RETURNS. *OUR OUTSIDE AUDITORS, ERNST &amp; YOUNG, PARTICIPATED IN THE PREPARATION OF, AND REVIEWED, ALL TAX RETURNS. *A QUESTIONNAIRE WAS CIRCULATED TO ALL TRUSTEES (I.E., DIRECTORS), OFFICERS AND KEY EMPLOYEES IN ORDER TO ELICIT THE INFORMATION REQUIRED TO BE REPORTED ON THE TAX RETURNS. *THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE, THE COMPLIANCE DEPARTMENT AND E&amp;Y REVIEWED THE RESPONSES PROVIDED BY TRUSTEES IN THE QUESTIONNAIRES AND ASSESSED ADDITIONAL PERTINENT FACTS GATHERED BY THE INSTITUTION IN ORDER TO EVALUATE THE APPLICABILITY OF IRS REPORTING REQUIREMENTS. THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE, AND THE COMPLIANCE DEPARTMENT THEN RECCOMENDED THE APPROPRIATE TRUSTEE DISCLOSURES THAT SHOULD BE MADE ON FORM 990. THESE RECOMMENDATIONS WERE REVIEWED AND APPROVED BY E&amp;Y. *THE AUDIT AND COMPLIANCE COMMITTEE OF THE BOARD OF TRUSTEES CONDUCTED A REVIEW OF THE ENTIRE TAX RETURN, WITH THE PARTICIPATION OF E&amp;Y, THE FINANCE DEPARTMENT, THE GENERAL COUNSEL'S OFFICE, and THE AUDIT and compliance COMMITTEE APPROVED THE TAX RETURNS AS PRESENTED. *THE AUDIT and compliance COMMITTEE'S REPORT OF ITS REVIEW OF THE TAX RETURNS AND ITS RECOMMENDATION TO FILE THE RETURNS WERE PRESENTED TO, AND ACCEPTED BY, THE EXECUTIVE COMMITTEE OF THE BOARD OF TRUSTEES (THE "EXECUTIVE COMMITTEE"). *IN ADDITION TO AUTHORIZING THE FILING OF THE TAX RETURNS, THE EXECUTIVE COMMITTEE DIRECTED THAT THE RETURNS, WHICH WILL BE FILED ON OR BEFORE NOVEMBER 15, 2011, BE PROVIDED TO ALL TRUSTEES VIA THE TRUSTEES' CONFIDENTIAL WEBSITE, AND THOSE RETURNS WERE SO PROVIDED before being filed. PART VI, SECTION B, LINE 12C MONITORING &amp; ENFORCING COMPLIANCE WITH THE POLICY Compliance with the Organization's Business Conflicts of Interest Policy (the "Policy") is required of trustees, employees, medical staff and non-employee members of institutional committees and includes an ongoing duty to disclose potential conflicts. Compliance with the Policy is monitored and enforced regularly and consistently. All disclosures with the potential for conflict are reviewed by an appropriate committee where they are carefully evaluated. When appropriate, a plan, which may involve measures including, but not limited to, recusal from participating in affected transactions, is developed to manage the potential conflict. PART VI, SECTION B, QUESTIONS 12-14 THE BOARDS OF MSMC, MSSM AND MSH HAVE ADOPTED ALL POLICIES REFERRED TO IN FORM 990, PART VI, SECTION B QUESTIONS 12 TO 14, WHICH COVER ALL OWNED/CONTROLLED ENTITIES, INCLUDING THE CHILDREN'S CENTER FOUNDATION. PART VI, SECTION C, LINE 19 GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AVAILABLE TO THE PUBLIC THE ORGANIZATION MAKES ITS BUSINESS CONFLICTS OF INTEREST POLICY AVAILABLE ON ITS WEBSITE (WWW.MOUNTSINAI.ORG) AND MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE UPON REQUEST. PART VII, SECTION A, LINE 1 - (B) HOURS FOR RELATED ORGANIZATIONS *ANGELA DIAZ: MOUNT SINAI SCHOOL OF MEDICINE - 8 HRS, MOUNT SINAI HOSPITAL - 32 HRS *IAN HOLZMAN: MOUNT SINAI SCHOOL OF MEDICINE - 40 HRS *KURT HIRSCHHORN: MOUNT SINAI SCHOOL OF MEDICINE - 16 HRS *RAMON MURPHY: MOUNT SINAI SCHOOL OF MEDICINE - 32 HRS *MEGAN STANTON: MOUNT SINAI HOSPITAL - 37.5 HRS *LEORA N MOGILNER: MOUNT SINAI SCHOOL OF MEDICINE - 28 HRS *LISA SATLIN: MOUNT SINAI SCHOOL OF MEDICINE - 40 HRS</Explanation>
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        <Explanation>THE MOUNT SINAI SCHOOL OF MEDICINE, THE MOUNT SINAI HOSPITAL, AND THE MOUNT SINAI MEDICAL CENTER ARE ALL MEMBERS OF THIS ENTITY.</Explanation>
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        <Explanation>THE MOUNT SINAI SCHOOL OF MEDICINE, THE MOUNT SINAI HOSPITAL, AND THE MSMC REALTY CORP. ARE ALL MEMBERS OF THIS ENTITY</Explanation>
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  </ReturnData>
</Return>